This part number includes alterations to a pair of heads that have been fully CNC ported on our state of the art Centroid 5 Axis machine. This level of porting is meant for maximum effort engines looking to make up to 725 HP or more.

CNC porting of the original heads will increase the overall chamber size. If you need the heads milled to a certain cc
or are trying to achieve a specific compression ratio, let us know and we can quote you a price on milling.

NOTE: This head will need to be machined for clearance if used with a MSD Ready to Run distributor.